Dish-washing machine.



w. s. DOUGHERTY & w. H. FRANK-LIN.

DISH WASHING MACHINE. APPLICATION FILED MAR. 6, 1915.

Patented Feb. 27, 1917.

UNITED STATES PATENT oFFroE.

WILLIAM S. DOUGHERTY AND WILLIAM H. FRANKLIN, OF MONTBOSE, COLORADO.

DISH-WASHING MACHINE.

Applicationfiled March 6, 1916. SeriaI'No. 82,480.

To all wh'omt't-may concern.

Be it known that we, WILLIAM S. DOUGHERTY and WILLIAM H. FRANKLIN,

- citizens of the United States, residing at Montrose, in the county-of Montrose and State of Colorado, have invented certain new and useful Improvements in Dish- It is another object of the ihvention to.

provide a dish washing machine primarily designed for use by boarding-housekeepers,

hotels and the like, which may either be manually or power-operated, and is so constructed that the water is directed upon all parts of the dishes to thoroughly cleanse the same.

It is a more particular object of the invention to provide a machine for the above purpose, including a water receiving tank or vessel, a basket rotatably mounted therein having an imperforate bottom wall and a central upwardly tapering standard rising therefrom through which the soapy water is radially discharged upon the dishes in the as et.

It is a further general objectof the 'invention to improve and simplify machines of the above character whereby the same are rendered highly reliable and eflicient in practical operation though capable of manufacture at relatively small cost.

With the above and other objects in view, our invention consists inthe novel features of construction, combination and arrange; ment of parts to be hereinafter more fully described, claimed and-illustrated in the accompanying drawing, in which,

Figure 1 is a vertical sectional view of a dish waehingmachine constructed in accordance with the our invention;'and v Fig. 2 is a horizontal section taken on, the line 22 of Fig. 1.

Referring in detail to the drawing, 5 designates the water receiving vessel or tank which may be of any' desired capacity and is provided atits bottom with a drainfaucet indicated at 6. i

preferred embodiment of x The dish container is provided with a vertical wire mesh wall 7 which is suitably secured at its lower end to an imperforate, shallow, conical bottom Wall 8. This bottom .wall is centrally provided with an openingsurrounded by the vertical upwardly tapering hollow standard 9 which is formed at its upper end with a chambered head 10, the annular wall of which is perforated, as indicated at 11. To the under side of the bottom Specification of Letters Patent. Patented Feb, 27, 1917 i wall,8, a spider 12 is suitably secured and is centrallyformed with a sleeve 13 keyed or otherwise fixed to a vertical shaft 14. Bracing arms or bars 15 are secured at their outer ends to the upper edge of the wall 7 of the dish container and are inclined upwardly therefrom and integrally connected by a collar or sleeve 16 engaged upon said shaft.--- The shaft 14 projects below the spider 12 and is seated in astep bearing member '17 fixed upon the bottom wall of the tank or vessel 5.

Bearings 18 and 19 are mounted upon the upper edge of the tank 5 at diametrically opposite points, the bearing 18'being hinged or pivoted as at 20 upon a bracket member fixed to the tank wall. The other bearing 19 is notched or recessed. A horizontal shaft 21 is rotatably mounted-at one end in the bearing 18 and is adapted to be seated at its .other end in the recess of the bearing member 19. Upon this shaft, a'bevel gear 22 is fixed and meshes with a similar gear 23 on the upper end of the vertical shaft 14. The shaft 21 is equipped with asuitable operating crank 23 or may be provided with a wheel to receive a driving belt when the device is to be power-operated. The shaft 14 is sustained in a perpendicular position to hold the gear 23 in mesh with the gear 22 by means of an angular'arm indicated at 24, one end of which is loosely engaged upon the shaft 14 and the other end bifurcated to provide a seat for the shaft 21. e

In the practical use of the invention, it

will be understood that the soiled dishes are placed within the wire basket and are ,directed by the inclined bottom wall 8 against the outer vertical wall of the basket so that they will receive the full benefit" ofthe water 5 is now filled with boilingwater, and durejected from the openings 11 in the head 10 of the central standard. The tank or vesselforcibly directed upon the dishes,

i to be the present preferred embodiment of tion is forced upwardly by the generated steam through the hollow tapering standard 9 and is ejected with considerable force through the openings" 11 upon the dishes. It will be observed that the bottom 8 of the dish container is spaced to some distance above the bottom wall of the tank, and particles of soap are placed in this space. The shaft 21 is operated to constantly turn the cage or basket during the washing of the dishes, and the soap particles being agitated as well as heated, it will be understood that 'the water is quickly rendered very soapy.

This soapy water finds its way between the dishes contained in the basket and as it isv all particles of food will be thoroughly removed. These particles will find their way outwardly between the mesh of the wire wall 7 and accumulate upon the bottom of the tank 5. It requires a very short time to thoroughly cleanse the dishes, and they may be readily removed by simply lifting the crank the shaft 21 and disengaging the gear 22 from the gear 23. Preferably, the water is first drained from the tank 5 and the dishes will be dried .by the heat from the metal walls, if allowed to stand for a short time.

The cage containing the dishes can then be removed from the tank. F or this purpose, a block and tackle may be used when'the machine is of large capacity such as would be used in hotels, andby means of such block and tackle the dish containing basket can be transferred to a rinsing tank containing clear water. As this is a perfectly obvious operation, it is not thought necessary to" illustrate the same in the drawing.

From the foregoing description, it will be seen that wehave devised a very simple, desirable and efficient dish washing machirfe which may be inexpensively manufactured and sold, and can be se-rviceably employed for both private domestic use and in large hotels.

While we have disclosed what we believe the, device, it is to be understood that the same is susceptible of considerable modificat1on therein and'we, therefore, reserve the prlvllege of adopting all such legitimate end of changes as may be fairly embodied within 'the spirit and scope of the invention as standard. rising from said opening and closed at its upper end, said standard having a plurality of perforations in its wall at the upper end thereof, a shaft rotatably mounted upon the base of the tank extending axially throughsaid standard and above the same, radially disposed supports for said container fixed upon said shaft adjacent its upper and lower ends, and an operating means geared to the upper end of said shaft to rotate said container.

2. In a dish washing machine, a water receiving tank, a dish container having a vertical wire mesh wall and an imperforate shallow conical bottom wall, said bottom wall having a central opening therein, a hollow tapering standard rising from said opening extending through the container, said standard being provided upon its upper end with a head having a perforated annular wall, a vertical shaft extending through said standard, a spider secured to the under side of said bottom wall and fixed upon said WILLIAM S. 'DOUGHER'IY. WILLIAM H.- FRANKLIN.

Witnesses:

GEORGE W. ALFoRn, M. A. CALLAWAY. 

